Isopropylphosphonyl Difluoride from China
Isopropylphosphonyl difluoride ((CH3)2CHP(O)F2) contains a branched isopropyl group linked to the phosphonyl difluoride moiety. It qualifies for HTS 2931.59.00.15 as one of the explicitly named isopropyl alkyl phosphonyl difluorides in halogenated organo-phosphorus compounds. Critical precursor in nerve agent synthesis and specialty fluorophosphorus chemicals.
Duty Rate — China → United States
13.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide OPPTS 830 testing data for customs; failure to declare toxicity leads to 100% exam rates
• Secure BIS export license equivalents for import; dual-use chemical with strict end-use monitoring
• Avoid glass packaging—use PFA/PTFE due to HF generation risk, preventing common DOT violation